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MaRussiya [10]
3 years ago
5

A dime has the same value as 10 pennies.Marley brought 290 pennies to the bank.How many dimes did Marley

Mathematics
1 answer:
LUCKY_DIMON [66]3 years ago
7 0
Technically Marley has zero dimes since she didn't bring any to the bank.  However, since 10 pennies equals 1 dime, you would take the 290 (which is the total amount of pennies) and divide it by 10 (which is the the value of one dime) to get your answer of 29 dimes.  You can check this by taking 29 and multiplying it by 10 to get the answer of 290.  I hope this helps.
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Read 2 more answers
A lake polluted by bacteria is treated with an antibacterial chemical. Aftertdays, thenumber N of bacteria per milliliter of wat
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Step-by-step explanation:

<u>Extrema values of functions </u>

If the first and second derivative of a function f exists, then f'(a)=0 will produce values for a called critical points. If a is a critical point and f''(a) is negative, then x=a is a local maximum, if f''(a) is positive, then x=a is a local minimum.  

We are given a function (corrected)

N(t) = 20(t^2-lnt^2)+ 30

N(t) = 20(t^2-2lnt)+ 30

(a)

First, we take its derivative

N'(t) = 20(2t-\frac{2}{t})

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20(2t-\frac{2}{t})=0

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2t^2-2=0

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t=1\ ,t=-1

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Taking the second derivative

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(b)

N(1)=20(1^2-2ln1)+ 30

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(d)

N(15)=20(15^2-2ln15)+ 30

N(15)=4391.7 is a maximum

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3 years ago
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